Update to Python 3.15beta3, from beta1 (#127)

Summary: Pull Request resolved: #127

Reviewed By: yoney

Differential Revision: D110808196

Pulled By: alexmalyshev

fbshipit-source-id: 6e243bf6eed6ecfd324c97ad1c7b763b4432f14c

Author: alexmalyshev

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
           - os: ubuntu-latest
             python-version: '3.14t'
           - os: ubuntu-latest
-            python-version: '3.15.0-beta.1'
+            python-version: '3.15.0-beta.3'
 
     steps:
     - name: Checkout CinderX